The second industrial revolution and its significance - Brown, Percy S., ed. (Philadelphia The American Academy of Political and Social Science, 1930)
Part of vol. CXLIX of the Annals, Prosperity reserves of public works, by Vernon A. Mund, and pt. III, Some social aspects of mental hygiene, ed. by Frankwood E. Williams, issued separately
Keywords: Economic history -- 1918-.; Industry; United States -- Economic conditions -- 1918-.